Highly-sensitive electrocatalytic determination for toxic phenols based on coupled cMWCNT/cyclodextrin edge-functionalized graphene composite

Gao, Juanjuan; Liu, Maoxiang; Song, Haiou; Zhang, Shupeng; Qian, Yueyue; Li, Aimin

doi:10.1016/j.jhazmat.2016.06.051

Cited by 47 publications

(28 citation statements)

References 60 publications

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“…Compared with the detection results of ethanol, toluene, and methanol, the gas sensor based on RGO/SnO 2 composite aerogel has much higher sensitivity to phenol with the LOD down to 5 ppb. In the same year, Gao et al [ 138 ] reported highly sensitive electrocatalytic determination of phenols based on coupled cMWCNT/cyclodextrin edge-functionalized graphene composite. The sensor has excellent performance towards trace detection of three typical phenols (4-aminophenol, 4-AP; 4-chlorophenol, 4-CP; 4-nitrophenol, 4-NP).…”

Section: Phenol Gas Sensorsmentioning

confidence: 99%

Recent Progress of Toxic Gas Sensors Based on 3D Graphene Frameworks

Dong

Xiao

Chu

et al. 2021

Sensors

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Air pollution is becoming an increasingly important global issue. Toxic gases such as ammonia, nitrogen dioxide, and volatile organic compounds (VOCs) like phenol are very common air pollutants. To date, various sensing methods have been proposed to detect these toxic gases. Researchers are trying their best to build sensors with the lowest detection limit, the highest sensitivity, and the best selectivity. As a 2D material, graphene is very sensitive to many gases and so can be used for gas sensors. Recent studies have shown that graphene with a 3D structure can increase the gas sensitivity of the sensors. The limit of detection (LOD) of the sensors can be upgraded from ppm level to several ppb level. In this review, the recent progress of the gas sensors based on 3D graphene frameworks in the detection of harmful gases is summarized and discussed.

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Section: Phenol Gas Sensorsmentioning

confidence: 99%

Recent Progress of Toxic Gas Sensors Based on 3D Graphene Frameworks

Dong

Xiao

Chu

et al. 2021

Sensors

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“…The detection limit was determined to be 45 nM for 4-AP on surface of GPE/PtAM. In Table 1, the results of a comparison study of the present work with some different modied electrodes 1,[10][11][12][13][35][36][37] and different chromatography methods, 4,5,9,[38][39][40][41][42] which show acceptable performance according to the tabulated data of this electrode. Furthermore, the interfering effects of other probable coexisting ions such as Ca 2+ , Cl À , Cr 3+ , Cu 2+ , K + , Mg 2+ , Na + , NO 3 À , PO 4 3À , SO 4 2À and Zn 2+ , were investigated and the results showed that the maximum interfering effects for these ions were seen with the determination of 4-AP (5% tolerable molar ratio >100).…”

Section: Linear Range and Detection Limit Oxidation Of 4-apmentioning

confidence: 99%

Platinized agarose microspheres as a new modifier in graphite paste electrodes for the electrochemical determination of 4-aminophenol

2020

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“…As an outcome, the US Environmental Protection Agency (USEP) and European Union (EU) has recorded 2‐chlorophenol(2‐CP), 2,4‐DCP, 2,4,6‐trichlorophenol (2,4,6‐TCP), and 2,3,4,5,6‐pentachlorophenol (PCP) as pollutants and controlled the greatest allowable convergence of CPs in drinking water at 0.5 ng/mL 34,36 . Recently, numerous traditional methods have been reported for determination of phenol, including spectrofluorimetry, 37 electrochemiluminescence, 38 spectrophotometer, 39 chromatogr‐aphy, 40‐41 electrophoresis, 42 electroanalysis 33,43‐46 . Compared with other methods, an electrochemical sensor is considered one of the best and conservative systems due to its low‐cost, ease of operation, sensitivity, rapidity and simplicity 47‐51 .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of conductive cross‐linked polyaniline/G‐MWCNTS core‐shell nanocomposite: A selective sensor for trace determination of chlorophenol in water samples

Katowah

Mohammed

Al‐Eryani

et al. 2020

Polymers for Advanced Techs

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The nanocomposites (NCs) of cross-linked polyaniline (CPA) with a variety of carbon nanomaterials (CNMs) (CPA/CNMs NCs) was prepared by the chemical oxidative copolymerization of PANI and p-phenylenediamine (PPDA) with triphenylamine (TPA) in the presence of CNMs. The results of XRD, FTIR and Raman indicated that the CPA/CNMs NCs were effectively synthesized with strong interactions among the constituents. The morphology study demonstrated that CNMs were well coated by CPA and produce a well-aligned nanorod core-shell structure with the large surface area which may be more beneficial to electrical conductivity when used as electrode materials. Differential thermal analysis techniques (TGA-DTG) were used to characterize the thermal stability of NCs. The heat of formation of CPA monomer from TPA, PPDA and aniline (ANI) were computed using Density Functional Theory (DFT) calculations. The NCs of G-MWCNTs demonstrate higher affinity to oxidation of Chlorophenols (CPHs) than glassy carbon electrode (GCE), CPA/GCE and the other NCs. Differential pulse voltammetry (DPV) was used for the trace determination of 2,4-dichlorophenol (2,4-DCP). Under the optimum conditions, the peak current of 2,4-DCP was proportional to its concentration in the range of 0.05-0.6 μmol/L. The detection limit was 7.6 nmol/L. The method was successfully applied for the determination of 2,4-DCP in fish farm water with satisfactory recoveries. The suggested method has an advantage to be used for water samples due to its short analytical time, rapid response, high sensitivity, and excellent selectivity with good reproducibility. K E Y W O R D S 2,4-dichlorophenol sensor, crosslinked polyaniline/G-MWCNTS nanocomposite, density functional theory, electrochemical properties, thermal properties 1 | INTRODUCTION Conducting polymer (CPs) based sensors have the advantages of the processability of environmental, simplicity, high electrical conductivity, mechanical flexibility as well as low cost 1-2 P.ANI in many applications has appeared as one of the most promising CPs materials. 3-6 PANI composites have been used in the fabrication of diverse devices, such as thermoelectric and energy storage devices, biofuel cells and batteries. 7-16 However, the electrochemical applications are the most promising application of these composites. Particularly, in many electroanalytical studies, the fabrication of PANI and PANI composite electrochemical sensors has become a common way and offers high selectivity as well as sensitivity to detect target molecules. 17-19 Crosslinking may be a candidate to enhance the PANI electrical and

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Highly-sensitive electrocatalytic determination for toxic phenols based on coupled cMWCNT/cyclodextrin edge-functionalized graphene composite

Cited by 47 publications

References 60 publications

Recent Progress of Toxic Gas Sensors Based on 3D Graphene Frameworks

Recent Progress of Toxic Gas Sensors Based on 3D Graphene Frameworks

Platinized agarose microspheres as a new modifier in graphite paste electrodes for the electrochemical determination of 4-aminophenol

Fabrication of conductive cross‐linked polyaniline/G‐MWCNTS core‐shell nanocomposite: A selective sensor for trace determination of chlorophenol in water samples

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